Patents by Inventor Wook Jin Choi

Wook Jin Choi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9349074
    Abstract: Disclosed herein are a method and an apparatus for generating a 3D knee joint image. According to an exemplary embodiment of the present invention, a method for generating a 3D knee joint image includes: generating a statistical shape model by using previously generated sample knee bone images; generating a knee joint bone image by segmenting a bone region from an input knee image using the statistical shape model; generating a keen joint cartilage image by segmenting a cartilage region from the knee joint bone image; and generating a 3D knee joint image for the input knee image by composing the knee joint bone image with the knee joint cartilage image. According to the exemplary embodiments of the present invention, it is possible to more rapidly and accurately generate the 3D knee joint image.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: May 24, 2016
    Assignee: GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Tae Sun Choi, Wook-Jin Choi
  • Patent number: 9285285
    Abstract: Disclosed is a sensor unit having a simple sensor structure to detect intensity of force applied to a parking cable upon braking a vehicle and an electronic parking brake with the same. The disclosed sensor unit includes a sensor housing, in which a Hall IC is installed to sense variation of magnetic force caused by displacement of a magnet, a magnet housing arranged to be movable within the sensor housing, the magnet being installed in the magnet housing, and an elastic member arranged between the magnet housing and the sensor housing, to elastically support the magnet housing. The magnet housing is coupled to a power conversion unit to operate for pulling of the parking cable or release of the pulling.
    Type: Grant
    Filed: November 14, 2012
    Date of Patent: March 15, 2016
    Assignee: MANDO CORPORATION
    Inventors: Wook Jin Choi, Jae Hyun Lee
  • Publication number: 20150117728
    Abstract: Disclosed herein are a method and an apparatus for generating a 3D knee joint image. According to an exemplary embodiment of the present invention, a method for generating a 3D knee joint image includes: generating a statistical shape model by using previously generated sample knee bone images; generating a knee joint bone image by segmenting a bone region from an input knee image using the statistical shape model; generating a keen joint cartilage image by segmenting a cartilage region from the knee joint bone image; and generating a 3D knee joint image for the input knee image by composing the knee joint bone image with the knee joint cartilage image. According to the exemplary embodiments of the present invention, it is possible to more rapidly and accurately generate the 3D knee joint image.
    Type: Application
    Filed: December 27, 2013
    Publication date: April 30, 2015
    Applicant: GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Tae Sun CHOI, Wook-Jin CHOI
  • Publication number: 20130313055
    Abstract: Disclosed is a sensor unit having a simple sensor structure to detect intensity of force applied to a parking cable upon braking a vehicle and an electronic parking brake with the same. The disclosed sensor unit includes a sensor housing, in which a Hall IC is installed to sense variation of magnetic force caused by displacement of a magnet, a magnet housing arranged to be movable within the sensor housing, the magnet being installed in the magnet housing, and an elastic member arranged between the magnet housing and the sensor housing, to elastically support the magnet housing. The magnet housing is coupled to a power conversion unit to operate for pulling of the parking cable or release of the pulling.
    Type: Application
    Filed: November 14, 2012
    Publication date: November 28, 2013
    Applicant: MANDO CORPORATION
    Inventors: Wook Jin CHOI, Jae Hyun LEE
  • Publication number: 20110112741
    Abstract: Disclosed is an electric parking brake. The electric parking brake includes driving motor generating rotational force, a driving gear formed at a driving shaft of the driving motor, a driven gear directly coupled with the driving gear, and a spindle coupled with the driven gear to linearly move by receiving the rotational force of the driving motor through the driven gear when the driving motor is driven. The structure of the gears transferring the rotational force of the driving motor is simplified as the driving gear and the driven gear, so that the installation space for the gears is reduced, thereby reducing the size of the electric parking brake.
    Type: Application
    Filed: November 10, 2010
    Publication date: May 12, 2011
    Inventor: Wook Jin CHOI
  • Publication number: 20110024243
    Abstract: Disclosed herein are an electronic parking brake system and a control method thereof. The electronic parking brake system includes brakes, a parking cable to apply braking force to the brakes, a motor to apply tension to the parking cable, a current sensor to sense current of the motor, and an electronic control unit to judge the braking force of the brakes based on the current of the motor, and to control driving of the motor based on the braking force. The electronic parking brake system senses the tension of the parking cable using the small-sized current sensor, thereby easily obtaining a space in which the current sensor is installed and thus reducing a product size of the electronic parking brake system. Further, the electronic parking brake system senses the tension of the parking cable using the inexpensive current sensor, thereby reducing manufacturing costs of the electronic parking brake system and reducing costs of an electronic parking brake system product and a vehicle provided with the same.
    Type: Application
    Filed: July 29, 2010
    Publication date: February 3, 2011
    Inventor: Wook Jin Choi
  • Patent number: 7866625
    Abstract: A solenoid valve for a brake system, which has a simplified configuration and can be easily manufactured with reduced manufacturing costs.
    Type: Grant
    Filed: April 28, 2008
    Date of Patent: January 11, 2011
    Assignee: Mando Corporation
    Inventors: Chung Jae Lee, Wook Jin Choi, Yong Kap Kim
  • Publication number: 20090095928
    Abstract: A solenoid valve for a brake system, which has a simplified configuration and can be easily manufactured with reduced manufacturing costs.
    Type: Application
    Filed: April 28, 2008
    Publication date: April 16, 2009
    Applicant: MANDO CORPORATION
    Inventors: Chung Jae Lee, Wook Jin Choi, Yong Kap Kim